This is the Bonus cache for the Adventure Lab "Roman Around Lincoln".
The value of the individual letters are each stage clue from the Adventure Lab "Roman Around Lincoln"
N 53° (A x10).((B x E) + 42)
W 000° ((C+D)-9).(((A x 20) + (B x 2 ) + (C x 2) + D + E) + 817).
Good Luck!